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| Number | Title | Issue Date |
| 5448354 | Acceleration distortion resistant ring laser gyro The ACCELERATION DISTORTION RESISTANT RING LASER GYRO (RLG) (10) shown here includes a control mirror (12) subject to distortion beyond the path length control capabilities of the RLG (10) when subjected to intense translational acceleration in the direct... | 09/05/1995 |
| 5444639 | Angular rate sensing system and method, with digital synthesizer and variable-frequency oscillator For use with a quartz angular rate sensor, a frequency and phase-locked synthesizer recovers a reference signal virtually free of phase noise, and generates a quadrature-phase reference signal for complex demodulation of the angular rate signal. The synth... | 08/22/1995 |
| 5440239 | Transferable solder bumps for interconnect and assembly of MCM substrates The invention uses transferable solder bump connection techniques in combination with a disposable test board to test and burn-in "as received" (i.e., untested) dies. Using transferable solder bumps, a die is first attached to the top of a disposable test... | 08/08/1995 |
| 5438231 | Thin film micromechanical resonator gyro A method to fabricate a tuning fork resonator gyro which uses non-piezoelectric substrate structure is proposed. The tuning fork structure can be effectively rendered piezoelectric for activation and sensing by thin film deposition of a piezoelectric mate... | 08/01/1995 |
| 5430543 | Ring laser gyro detector lens system A ring laser gyroscope detector lens system for mounting on a ring laser gyroscope body having a resonant cavity. The ring laser gyroscope body has CW and CCW counterpropagating light beams propagating in a plane normal to the rate input axis of the ring ... | 07/04/1995 |
| 5379114 | Ring laser gyro scale factor enhancement circuit A ring laser gyro scale factor enhancement circuit connected between at least one power supply voltage level and a reference potential for conditioning at least a first and second input signal from a ring laser gyro assembly, the first and second input si... | 01/03/1995 |
| 5369654 | Fault tolerant gate array using duplication only The FAULT TOLERANT GATE ARRAY USING DUPLICATION ONLY shown here renders AND-drives-OR, and OR-drives-AND, gate arrays as fault tolerant as when triplicated, but does so by only duplicating the array. A test input is added to each of gates of the bottom ti... | 11/29/1994 |
| 5367475 | Moving vehicle classifier with iterative deconvolver estimator A MOVING VEHICLE CLASSIFIER WITH ITERATIVE DECONVOLVER ESTIMATOR deconvolves a signal in which a plurality of sensed signals, which originate from a common signal source (namely, a moving vehicle) and traverse differing signal paths, are used to formulate... | 11/22/1994 |
| 5366934 | Method for sulfide surface passivation A purely chemical method for forming a layer of insoluble sulfides on semiconductor surfaces in order to passivate their surfaces and more particularly to a method of forming a layer of insoluble sulfides on a HgCdTe device surface.... | 11/22/1994 |
| 5361036 | Complex digital demodulator employing Chebychev-approximation derived synthetic sinusoid generation To demonstrate a signal, the signal is sampled and each sample of the signal is multiplied by the sine and the cosine of a phase angle indicating when the sample was taken from the signal. The sinusoidal signal for producing an in-phase demodulated signal... | 11/01/1994 |
| 5361379 | Soft-decision classifier An apparatus and method are disclosed for classifying a signal among a plurality of potential signal sources or events in which a signal embodying values for predefined source features is received and conditional likelihoods are determined for the corresp... | 11/01/1994 |
| 5359414 | Ring laser gyroscope fringe detector apparatus with radiation photocurrent compensation A ring laser gyroscope radiation-resistant detector lens system for mounting on a ring laser gyroscope body having a resonant cavity. The ring laser gyroscope body has CW and CCW counterpropagating light beams propagating in a plane normal to the rate inp... | 10/25/1994 |
| 5341208 | Gas bypass for bias reduction in laser gyrescopes A ring laser gyro, having: an envelope for an optically resonant cavity having a gain bore section, the envelope containing an active gas medium. The envelope contains electrically energizable electrode means having at least two electrodes at electrode lo... | 08/23/1994 |
| 5339263 | Combined decimation/interpolation filter for ADC and DAC A COMBINED DECIMATION/INTERPOLATION FILTER FOR ADC AND DAC (analog-to-digital converter and digital-to-analog converter) provides a single filter which may be used both as a decimation filter and as an interpolation filter. It is simple and inexpensive. I... | 08/16/1994 |
| 5337257 | Moving vehicle classifier with nonlinear mapper The moving vehicle classifier with nonlinear mapper provides a method and apparatus for estimating the presence of a target moving vehicle in a sensor environment through estimation and classification of the sensor data. Values are extracted from the sens... | 08/09/1994 |
| 5331660 | Ring laser gyro gas bypass with auxiliary discharge A ring laser gyro, having: an envelope for an optically resonant cavity having a gain bore section, the envelope containing an active gas medium. The envelope contains electrically gain bore energizable electrode means having at least two electrodes at el... | 07/19/1994 |
| 5326642 | Infrared absorptive coating for beryllium surface The Infrared absorptive coating for beryllium surface shown here is produced by providing a flat beryllium surface 10, which is cleaned 12, toughened 14, coated with a modifying material 16-22, and anodized 24. The modifying material, preferably aluminum,... | 07/05/1994 |
| 5323223 | Radar laser transmitter A laser radar for scanning a target aperture having a predetermined array of locations comprising a laser means having a power source and a resonator cavity containing a lasing medium, the laser means providing a SINGLE FREQUENCY LIGHT SOURCE (FO); means ... | 06/21/1994 |
| 5319587 | Computing element for neural networks A computing element for use in an array in a neural network. Each computing element has K (K>1) input signal terminals, K input backpropagated signal terminals, K output backpropagated signal terminals and at least one output terminal. The input terminals... | 06/07/1994 |
| 5319521 | Ceramic frames and capsules for Z-axis modules The Ceramic frames and capsules for Z-axis modules shown herein are formed by placing chips 10 into a ceramic frame 12, breaking apart the frame 12 into sub-frames 26, and bonding the sub-frames 26 into a module 30. The sub-frames 26 may be separated by c... | 06/07/1994 |
| 5315651 | Active surge rejection circuit The ACTIVE SURGE REJECTION CIRCUIT uses a FET connected in one of the TIP and RING leads to open and close the lead. A JK flip-flop is connected to a voltage sensing circuit which senses voltage surges and clocks the flip-flop early in the voltage rise. T... | 05/24/1994 |
| 5306660 | Technique for doping mercury cadmium telluride MOCVD grown crystalline materials using free radical transport of elemental indium and apparatus therefor Method and apparatus for vapor phase free methyl radical transport of indium dopant species for precise predetermined reproducible doping concentrations to control electrical properties for MOCVD grown materials.... | 04/26/1994 |
| 5278774 | Alarm for transient underwater events An alarm for detecting transient senic events determines an estimate of background environmental acoustic events or noise by computing a short time correlation function for individual segments of data and then subtracting an estimated mean of the correlat... | 01/11/1994 |
| 5274739 | Product code memory Itakura-Saito (MIS) measure for sound recognition A SOUND RECOGNITION PROCESS comprises training a sound recognition system to a shape Hidden Markov Model (HMM) from a shape codebook of shape codewords, and to a separate gain HMM from a gain codebook of gain codewords. An unknown token is assigned to the... | 12/28/1993 |
| 5270953 | Fast convolution multiplier The present invention provides a method and apparatus for performing finite impulse response (FIR) type filtering of 2N points of real-only input data using fewer multiplication elements than traditionally required. A filter multiplexer segregates or divi... | 12/14/1993 |
| 5265266 | Resistive planar star double-balanced mixer A passive uniplanar double-balanced star RF mixer, comprising a substantially planar support substrate with a conductive layer of material disposed on one side and a slotline and first, second, and third coplanar waveguides formed therein which are config... | 11/23/1993 |
| 5229843 | Circuit for increasing the resolution of a laser gyroscope with clock synchronization A laser gyroscope signal generator for increasing the resolution of the gyroscope, the signal generator being responsive to a sequence of pairs of phase shifted first and second laser gyroscope output pulses each being characterized to have a first and se... | 07/20/1993 |
| 5202966 | Centralized bus arbitration circuit The centralized bus arbitration circuit 20 shown here allows processor 12-18 access to a bus 10 for a period of time determined by either the processor 12-18 or the circuit 20, as appropriate. Indefinite access and immediate return of control to the bus a... | 04/13/1993 |
| 5199037 | Extended laser life Extended laser life may be obtained by measuring, with an ammeter AM, the discharge current applied to a laser (either linear or a ring laser gyro RLG), measuring the intensity of the resulting light beam with an intensity monitor IM, calculating the nois... | 03/30/1993 |
| 5187544 | Tuner for ring laser gyro dither mechanism The tuner for ring laser gyro dither mechanism shown herein is a disk 32 which is bolted to the top end 48 of a base mounted vane 24 of the gyro. All such base mounted vane top ends 48 are thus bolted together, thereby stiffening the spring constant of th... | 02/16/1993 |
| 5187539 | Mirror surface characteristic testing An apparatus and method are disclosed for characterizing the surface of mirrors in which a cross-grid type phase grating is illuminated from behind by light reflected from the mirror so as to create a grid-like interference pattern when observed along an ... | 02/16/1993 |
| 5175737 | Cavity referenced acousto-optical laser frequency stabilization The CAVITY REFERENCED ACOUSTO-OPTICAL LASER FREQUENCY STABILIZATION shown here locks the frequency of a laser 10 to that of a reference cavity 26. It frequency modulates the input 24 to the cavity 26 with an acouto-optical modulator 18 which operates on a... | 12/29/1992 |
| 5167386 | Pyrotechnic removal of a radome cover Pyrotechnic removal of a radome cover may be accomplished by scoring longitudinal recesses 50, preferably at least four, on the inner surface 26 of the cover 18. Explosives cord 38, shaped to preferentially detonate outward, is placed in the recesses 50, ... | 12/01/1992 |
| 5152171 | Induction velocity meter This invention relates to an induction velocity meter and more particularly to such a device having a highly accurate digital output signal which is of simplified construction and high reliability as compared with prior art devices.... | 10/06/1992 |
| 5146688 | Low power tiltmeter electronics with compensation for bubble level fluid temperature Low power tiltmeter electronics with compensation for bubble level fluid temperature include compensating methods both for temperature-induced conductivity changes and temperature-induced viscosity changes in the bubble level fluid of a tiltmeter. The con... | 09/15/1992 |
| 5143334 | Low moving mass two axis gimbal The low moving mass two axis gimbal shown here has a drive gimbal 10 and a payload gimbal 12 on a common central post 14. Each gimbal 10,12 has two axes 16,18,20,22. The rings 24,26 of the gimbals 12,14 are kept parallel to each other by three push rods 2... | 09/01/1992 |
| 5132689 | Dual function radar receiver The Dual Function Radar Receiver shown provides hardware commonality between detection and tracking modes. Four channels (56, 58, 60, 62) are provided, each of which searches a separate range bin during the detection mode. During the tracking mode, one ch... | 07/21/1992 |
| 5132648 | Large array MMIC feedthrough A method and apparatus are disclosed for manufacturing large Monolithic Microwave Integrated Circuit (MMIC) arrays. MMIC elements are manufactured on a substrate to form a MMIC module and first conductive vias are created in the substrate at locations cor... | 07/21/1992 |
| 5125600 | Removable radome cover The removalbe radome cover shown here is suitable for protecting the radome at the nose of a high speed missile before the radar is turned on. An outer layer lies over, but is not bonded to, an inner layer, and is divided into longitudinal sheets by tear ... | 06/30/1992 |
| 5123164 | Hermetic organic/inorganic interconnection substrate for hybrid circuit manufacture The present invention eliminates the release of vapors from an adhesive which bonds an organic multilayer substrate to a ceramic layer. Posts from the organic layer are plated up sufficiently high as to enter holes in the ceramic layer, but not completely... | 06/23/1992 |
